Counter-directional gas injection for a furnace system

Abstract

Methods, systems, and devices, implementing counter-directional gas injection for a furnace system are described. A furnace system may be configured to heat and draw optically transmissive material to form optical fibers. For example, the furnace system may include an insulated muffle coupled with a heater, where the muffle defines a diametrically consistent cavity in which the optically transmissive material is heated and drawn. The optically transmissive material may be drawn through the cavity in a direction associated with gravity. The furnace system may inject one or more inert gases into the cavity via an inlet port at a bottom portion of the muffle, and release the one or more inert gases from the cavity via an outlet port at a top portion of the muffle, such that the one or more inert gases flow in a direction counter to the drawing of the optically transmissive material.

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